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          <time>2020-08-10</time>
          
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      <h2 class="post-title syuanpi fadeInRightShort back-2">
        
          <a href="/blog/2020/08/10/44355a63/">_IO_FILE结构与fread函数知识点小结</a>
        
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          <p>本文简单介绍一些有关_IO_FILE结构与fread函数的知识点。</p>
<p>首先需要下载一个glibc的源代码，我这里看的是glibc-2.23的源代码。</p>
<p>（glibc的源代码可以从gnu的官网<a href="http://ftp.gnu.org/gnu/glibc/" target="_blank" rel="noopener">下载</a>，如果嫌速度太慢，可以找国内的镜像站下载，这里我推荐从<a href="https://mirrors.tuna.tsinghua.edu.cn/gnu/glibc/" target="_blank" rel="noopener">清华大学开源软件镜像站的相关位置</a>下载）</p>
<p>(博主还是菜鸟，有些知识可能理解不够透彻，有些表述可能不够严谨，欢迎大家指正，望大家多多包涵)</p>
        
      
    
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        <a href="/blog/tags/%E7%9F%A5%E8%AF%86%E7%82%B9%E8%AE%B0%E5%BD%95/">知识点记录</a>
      
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          <time>2020-08-07</time>
          
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      <h2 class="post-title syuanpi fadeInRightShort back-2">
        
          <a href="/blog/2020/08/07/38a4c9bb/">Pwn环境的搭建和解答一些简单Pwn题的分享</a>
        
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          <p>本文专门是为某次分享会而写的，目的是分享一下我在搭建Pwn的本地解题环境上的经验，还有简单介绍一下一些比较简单的Pwn的入门题。</p>
<p>(博主还是菜鸟，有些知识可能理解不够透彻，有些表述可能不够严谨，欢迎大家指正，望大家多多包涵)</p>
        
      
    
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        <a href="/blog/tags/%E5%85%B6%E4%BB%96/">其他</a>
      
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          <time>2020-08-01</time>
          
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      <h2 class="post-title syuanpi fadeInRightShort back-2">
        
          <a href="/blog/2020/08/01/8e1ab4ab/">Pwn题里有关seccomp和prctl函数的知识点小结</a>
        
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          <h1 id="写在正文之前"><a href="#写在正文之前" class="headerlink" title="写在正文之前"></a>写在正文之前</h1><p>本文用于记录Pwn题里有关seccomp和prctl函数的知识点，其中很大一部分归纳于Linux下使用<code>man seccomp</code>和<code>man prctl</code>命令获得的帮助文档，有部分是个人的理解，翻译（渣翻，英语水平不好，会结合谷歌翻译），还有部分是参考许多大佬的文章。</p>
<p>部分参考文章：<a href="https://www.anquanke.com/post/id/208364" target="_blank" rel="noopener">Seccomp从0到1</a></p>
<p>(博主还是菜鸟，有些知识可能理解不够透彻，有些表述可能不够严谨，欢迎大家指正，望大家多多包涵)</p>
        
      
    
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        <a href="/blog/tags/%E7%9F%A5%E8%AF%86%E7%82%B9%E8%AE%B0%E5%BD%95/">知识点记录</a>
      
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          <time>2020-07-28</time>
          
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      <h2 class="post-title syuanpi fadeInRightShort back-2">
        
          <a href="/blog/2020/07/28/cfa15dd3/">BUUCTF-Pwn题-Writeup（2）</a>
        
      </h2>
    </header>
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          <p>(博主还是菜鸟，有些知识可能理解不够透彻，有些表述可能不够严谨，欢迎大家指正，望大家多多包涵)</p>
        
      
    
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        <a href="/blog/tags/Writeup/">Writeup</a>
      
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          <time>2020-07-27</time>
          
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          <a href="/blog/2020/07/27/dd14f23d/">BUUCTF-Pwn题-Writeup（1）</a>
        
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          <h1 id="写在开头"><a href="#写在开头" class="headerlink" title="写在开头"></a>写在开头</h1><p>这一篇博客是我对我在<a href="https://buuoj.cn/" target="_blank" rel="noopener">这个OJ</a>上做出的题所写的Writeup，现在是收录的一般是比较简单的。</p>
<p>(博主还是菜鸟，有些知识可能理解不够透彻，有些表述可能不够严谨，欢迎大家指正，望大家多多包涵)</p>
        
      
    
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        <a href="/blog/tags/Writeup/">Writeup</a>
      
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          <time>2020-07-26</time>
          
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      <h2 class="post-title syuanpi fadeInRightShort back-2">
        
          <a href="/blog/2020/07/26/253f1adb/">DASCTF七月赛个人Writeup</a>
        
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          <h1 id="写在开头"><a href="#写在开头" class="headerlink" title="写在开头"></a>写在开头</h1><p>这次的这个小比赛我只写出了一道题，老实说确实有点失望，这次暴露了我在”自己写shellcode“和”直接分析汇编代码“上的不足，还有对”seccomp“相关的保护的不熟悉。</p>
<p>(博主还是菜鸟，有些知识可能理解不够透彻，有些表述可能不够严谨，欢迎大家指正，望大家多多包涵)</p>
        
      
    
      <p class="content-link">
        <a href="/blog/2020/07/26/253f1adb/#more">
          <span>继续阅读</span>
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        <a href="/blog/tags/Writeup/">Writeup</a>
      
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          <time>2020-07-19</time>
          
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      <h2 class="post-title syuanpi fadeInRightShort back-2">
        
          <a href="/blog/2020/07/19/5cfa9d84/">正则表达式学习1</a>
        
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          <p><strong>注意：本文的知识点总结于网络，部分来源于：<a href="https://deerchao.cn/tutorials/regex/regex.htm" target="_blank" rel="noopener">正则表达式30分钟入门教程</a></strong></p>
        
      
    
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        <a href="/blog/tags/%E7%9F%A5%E8%AF%86%E7%82%B9%E8%AE%B0%E5%BD%95/">知识点记录</a>
      
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          <time>2020-07-12</time>
          
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      <h2 class="post-title syuanpi fadeInRightShort back-2">
        
          <a href="/blog/2020/07/12/e563c85c/">攻防世界-magic题Writeup</a>
        
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          <h1 id="一"><a href="#一" class="headerlink" title="一"></a>一</h1><p>这道题我花了很长时间依照<a href="https://www.anquanke.com/post/id/194577" target="_blank" rel="noopener">大佬的Writeup</a>的思想才写出来，这道题主要是需要认识到如何修改FILE结构的内容然后利用fread和fwrite进行任意写，任意读的操作。</p>
<p>(博主还是菜鸟，有些知识可能理解不够透彻，有些表述可能不够严谨，欢迎大家指正，望大家多多包涵)</p>
        
      
    
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          <span>继续阅读</span>
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        <a href="/blog/tags/Writeup/">Writeup</a>
      
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          <time>2020-06-17</time>
          
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      <h2 class="post-title syuanpi fadeInRightShort back-2">
        
          <a href="/blog/2020/06/17/45ae5a23/">攻防世界-“250”题Writeup</a>
        
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          <h1 id="前言"><a href="#前言" class="headerlink" title="前言"></a>前言</h1><p>这道题其实是比较简单的，而且好像有多种解法，我采用ret2syscall的解法，而攻防世界的Writeup上是使用mprotect修改权限再执行shellcode。</p>
<p>(博主还是菜鸟，有些知识可能理解不够透彻，有些表述可能不够严谨，欢迎大家指正，望大家多多包涵)</p>
        
      
    
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          <span>继续阅读</span>
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        <a href="/blog/tags/Writeup/">Writeup</a>
      
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          <time>2020-06-17</time>
          
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          <a href="/blog/2020/06/17/47cfb24f/">攻防世界-“Recho”题Writeup</a>
        
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          <h1 id="前言"><a href="#前言" class="headerlink" title="前言"></a>前言</h1><p>本题是一个稍微“转了几圈”的常规栈溢出的题，主要涉及到<code>pwntools</code>的特殊使用方式</p>
<p>(博主还是菜鸟，有些知识可能理解不够透彻，有些表述可能不够严谨，欢迎大家指正，望大家多多包涵)</p>
        
      
    
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